Improper Authentication Affecting libapache2-mod-auth-mellon package, versions <0.14.2-1ubuntu1
Threat Intelligence
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Test your applications- Snyk IDSNYK-UBUNTU1910-LIBAPACHE2MODAUTHMELLON-576655
- published22 Mar 2019
- disclosed26 Mar 2019
Introduced: 22 Mar 2019
CVE-2019-3878 (opens in a new tab)How to fix?
Upgrade Ubuntu:19.10 libapache2-mod-auth-mellon to version 0.14.2-1ubuntu1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libapache2-mod-auth-mellon package and not the libapache2-mod-auth-mellon package as distributed by Ubuntu.
See How to fix? for Ubuntu:19.10 relevant fixed versions and status.
A vulnerability was found in mod_auth_mellon before v0.14.2. If Apache is configured as a reverse proxy and mod_auth_mellon is configured to only let through authenticated users (with the require valid-user directive), adding special HTTP headers that are normally used to start the special SAML ECP (non-browser based) can be used to bypass authentication.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2019-3878
- https://security-tracker.debian.org/tracker/CVE-2019-3878
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/
- https://github.com/Uninett/mod_auth_mellon/pull/196
- https://access.redhat.com/errata/RHBA-2019:0959
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3878
- https://access.redhat.com/errata/RHSA-2019:0746
- https://access.redhat.com/errata/RHSA-2019:0766
- https://access.redhat.com/errata/RHSA-2019:0985
- https://usn.ubuntu.com/3924-1/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNW5YMC5TLWVWNJEY6AIWNSNPRAMWPQJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X7NLAU7KROWNTHAYSA2S67X347F42L2I/